论文选题遵循的原则是（）。
A.具有价值性
B.合理可行性
C.新意创造性
D.以上全是
参考答案：D
Look and write. (看图写词, 完成句子)
1. This is a It's
2. This is a It's _
3. This is a It's _
4. This is a It's
5. This is a It's
一老年患者，因张口过大致口涎外溢，语言不清，半张口位，耳屏前方空虚，可触及凹陷。据此可诊断.
It's 
It's _ 
It's _ 
It's 
It's 